Description compiled by Bethan Ifans for the retrospective conversion project of NLW MSS. The following source was used in the compilation of this description: Handlist of Manuscripts in the National Library of Wales, Volume III (Aberystwyth, 1961);

See also NLW MSS 10713D-10717B, 10720B-10741E, which also contain material relating to Glannau Rhyddallt Friendly Society.

The description is also available in Handlist of Manuscripts in the National Library of Wales, Part XIX, 239.